What is the answer of 7a-6+8a

A concession stand sells hamburgers. The revenue from the hamburgers is (30x+45) dollar. The revenue from drinks is (63x+84) dollars. The price of a drink is $3. Write an expression that represents the number of drinks sold.

A survey of the students in Lance's school found that 58% of the respondents want the school year lengthened, while 42% think it should remain the same. The margin of error of the survey is ±10%.

What is I=$562.59, p=$1500, t=yrs

Solve for x (15x + 10)

Write the scientific notation in numerals. 6.2 x 105

How does ordering the events this does not affect the level of suspense in the story

Erika worked 14 hours last week and 20 hours this week. If she earns $9 per hour, how much did she earn these two weeks?

Write the fraction as a decimal 21/40

What is 45.6 people per 3 square miles

A group of 5 children and 7 adults are going to a movie. child tickets costs $5 and adult tickets cost $7. how much will the movie tickets cost in all